Printed circuit transmission line transitions
Abstract
Three types of printed circuit transmission lines were investigated experimentally: microstrip; stripline; and grounded coplanar waveguide. Formulas for characteristic impedance were verified by measurements of lines on low-dielectric-constant substrates. Several designs of transitions from coaxial cable to microstripline were tested. The best of these was a uniform microstripline with a flare at the connector end. A transition from coax into coplanar waveguide, and one from stripline into microstrip, had high reflection coefficients. Transitions from coax to stripline, and from coplanar waveguide to microstrip, had low reflection coefficients.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- December 1985
- Bibcode:
- 1985STIN...8711110K
- Keywords:
-
- Coaxial Cables;
- Design Analysis;
- Planar Structures;
- Printed Circuits;
- Strip Transmission Lines;
- Waveguide Antennas;
- Geometry;
- Impedance;
- Microstrip Devices;
- Permittivity;
- Reflectance;
- Electronics and Electrical Engineering